Graetz, M. J. (1995). The role of architectural design in promoting the social objectives of zoos: A study of zoo exhibit design with reference to selected exhibits in Singapore Zoological Gardens.
توثيق أسلوب شيكاغو (الطبعة السابعة عشر)Graetz, Michael James. The Role of Architectural Design in Promoting the Social Objectives of Zoos: A Study of Zoo Exhibit Design with Reference to Selected Exhibits in Singapore Zoological Gardens. 1995.
توثيق جمعية اللغة المعاصرة MLA (الطبعة الثامنة)Graetz, Michael James. The Role of Architectural Design in Promoting the Social Objectives of Zoos: A Study of Zoo Exhibit Design with Reference to Selected Exhibits in Singapore Zoological Gardens. 1995.
تحذير: قد لا تكون هذه الاستشهادات دائما دقيقة بنسبة 100%.